按照两种类型理解70年代后期以来的ENSO型变化
- 作者：任宏利Fei-Fei JINMalte F.STUECKER谢瑞煌
- 会议时间：2013-10-23
- 关键词：厄尔尼诺现象 ; 南方涛动 ; 海温异常 ; 传播特征
- 作者单位：任宏利(国家气候中心,中国气象局气候研究开放实验室,北京 100081)Fei-Fei JIN(国家气候中心,中国气象局气候研究开放实验室,北京 100081;Department of Meteorology,School of Ocean and Earth Sciences and Technology,University of Hawaii,Honolulu,Hawaii,USA 96822)Malte F.STUECKER(Department of Meteorology,School of Ocean and Earth Sciences and Technology,University of Hawaii,Honolulu,Hawaii,USA 96822)谢瑞煌(中国海洋大学气象系,青岛 266100)
- 母体文献：第30届中国气象学会年会论文集
- 会议名称：第30届中国气象学会年会
- 会议地点：南京
- 主办单位：中国气象学会
- 语种：chi
摘要
ENSO.Another signature of the ENSO regime change is manifested by the frequentoccurrence of Warm-Pool (WP) type ENSO that accompanies SSTAs centered over thecentral Pacific near the WP edge and exhibits characteristics differing from those of CTENSO.The distinct manifestations of the two types of ENSO in this ENSO regimechange are identified clearly by removing the strong background decadal signal.Sincethe late 1970s,the WP ENSO features a weak eastward (westward) propagation of SSTAcenter in developing (decaying) phase,which makes no net contribution to the observedeastward propagation,and features a 2-3-yr period compared to the 4-5-yr period of theCT ENSO.Observations strongly suggest that WP and CT ENSO are independent quasi-biennial and quasi-quadrennial modes of the tropical Pacific climate variability,respectively,and that these two ENSO modes have coexisted actively since the late 1970swhen either El Nino or La Nina can be separated into the two types.